Update 5 files

- /roles/promtail/tasks/main.yml
- /roles/promtail/templates/promtail-config.yml.j2
- /roles/promtail/templates/promtail-service.yml.j2
- /roles/promtail/handlers/main.yml
- /group_vars/all.yml

group_vars/all.yml

@@ -259,6 +259,6 @@ loki_base_dir: "/mnt/loki"
 loki_config_dir: "{{ loki_base_dir }}/config"
 loki_data_dir: "{{ loki_base_dir }}/data"
 promtail_config_dir: "{{ loki_base_dir }}/promtail"
-loki_port: 45135
+loki_port: 3100
 loki_version: "2.9.2"
-loki_retention_days: 30
+loki_retention_days: 30

roles/promtail/handlers/main.yml

@@ -0,0 +1,7 @@
+---
+- name: restart promtail
+  systemd:
+    name: promtail
+    state: restarted
+    daemon_reload: yes
+  become: yes

roles/promtail/tasks/main.yml

@@ -0,0 +1,66 @@
+---
+- name: Create Promtail directories
+  file:
+    path: "{{ item }}"
+    state: directory
+    mode: '0755'
+  loop:
+    - "{{ promtail_config_dir }}"
+    - "{{ promtail_data_dir }}"
+  become: yes
+
+- name: Download Promtail binary
+  get_url:
+    url: "https://github.com/grafana/loki/releases/download/v{{ loki_version }}/promtail-linux-amd64.zip"
+    dest: /tmp/promtail-linux-amd64.zip
+    mode: '0644'
+    timeout: 60
+  become: yes
+
+- name: Unzip Promtail binary
+  unarchive:
+    src: /tmp/promtail-linux-amd64.zip
+    dest: /usr/local/bin/
+    remote_src: yes
+    owner: root
+    group: root
+    mode: '0755'
+  become: yes
+
+- name: Create Promtail system user
+  user:
+    name: promtail
+    system: yes
+    shell: /usr/sbin/nologin
+    create_home: no
+  become: yes
+
+- name: Deploy Promtail configuration
+  template:
+    src: promtail-config.yml.j2
+    dest: "{{ promtail_config_dir }}/promtail-config.yml"
+    mode: '0644'
+  notify: restart promtail
+  become: yes
+
+- name: Deploy Promtail systemd service
+  template:
+    src: promtail-service.yml.j2
+    dest: /etc/systemd/system/promtail.service
+    mode: '0644'
+  notify: restart promtail
+  become: yes
+
+- name: Start and enable Promtail service
+  systemd:
+    name: promtail
+    state: started
+    enabled: yes
+    daemon_reload: yes
+  become: yes
+
+- name: Clean up temporary files
+  file:
+    path: /tmp/promtail-linux-amd64.zip
+    state: absent
+  become: yes

roles/promtail/templates/promtail-config.yml.j2

@@ -0,0 +1,69 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /var/lib/promtail/positions.yaml
+
+clients:
+  - url: http://{{ loki_server_host }}:{{ loki_server_port }}/loki/api/v1/push
+
+scrape_configs:
+  - job_name: system
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: system-logs
+          host: "{{ inventory_hostname }}"
+          __path__: /var/log/*log
+
+  - job_name: auth
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: auth
+          host: "{{ inventory_hostname }}"
+          __path__: /var/log/auth.log
+
+  - job_name: syslog
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: syslog
+          host: "{{ inventory_hostname }}"
+          __path__: /var/log/syslog
+
+  - job_name: kernel
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: kernel
+          host: "{{ inventory_hostname }}"
+          __path__: /var/log/kern.log
+
+  - job_name: docker
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: container-logs
+          host: "{{ inventory_hostname }}"
+          __path__: /var/lib/docker/containers/*/*log
+    relabel_configs:
+      - source_labels: ['__path__']
+        target_label: container_name
+        regex: '/var/lib/docker/containers/([^/]*)/.*log'
+        replacement: '$1'
+
+  - job_name: applications
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: applications
+          host: "{{ inventory_hostname }}"
+          __path__: /var/log/*.log

roles/promtail/templates/promtail-service.yml.j2

@@ -0,0 +1,19 @@
+[Unit]
+Description=Promtail log collector
+Documentation=https://grafana.com/docs/loki/latest/clients/promtail/
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+User=promtail
+Group=promtail
+ExecStart=/usr/local/bin/promtail-linux-amd64 \
+  -config.file={{ promtail_config_dir }}/promtail-config.yml
+ExecReload=/bin/kill -HUP $MAINPID
+KillMode=process
+Restart=on-failure
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target